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    Low equivalent series resistance RF filter circuit board for an active implantable medical device
    4.
    发明授权
    Low equivalent series resistance RF filter circuit board for an active implantable medical device 有权

    公开(公告)号：US11406817B2

    公开(公告)日：2022-08-09

    申请号：US16880392

    申请日：2020-05-21

    Applicant: Greatbatch Ltd.

    Inventor： Robert A. Stevenson ,  Christine A. Frysz ,  Thomas Marzano ,  Keith W. Seitz

    IPC: A61N1/08 ,  H01G4/005 ,  H01G4/30 ,  H01G4/35 ,  H01G4/236 ,  A61N1/375 ,  H01G4/12 ,  H03H1/00 ,  A61N1/37

    Abstract: A filtered feedthrough assembly includes a ferrule configured to be installed in an AIMD housing. An insulator is disposed within a ferrule opening. A conductive pathway is disposed within a passageway through the insulator. A filter capacitor is disposed on a device side having active and ground electrode plates disposed within a capacitor dielectric k greater than 0 and less than 1,000. A capacitor active metallization is electrically connected to the active electrode plates. A ground capacitor metallization is electrically connected to the ground electrode plates. The filter capacitor is the first filter capacitor electrically connected to the conductive pathway coming from a body fluid side into the device side. An active electrical connection electrically connects the conductive pathway to the capacitor active metallization. A ground electrical connection electrically connects the ground capacitor metallization to the ferrule. The filter capacitor is a flat-through or an X2Y attenuator filter capacitor.

    Removable Terminal Pin Connector For An Active Electronics Circuit Board For Use In An Implantable Medical Device
    5.
    发明申请
    Removable Terminal Pin Connector For An Active Electronics Circuit Board For Use In An Implantable Medical Device 有权

    公开(公告)号：US20220115806A1

    公开(公告)日：2022-04-14

    申请号：US17561048

    申请日：2021-12-23

    Applicant: Greatbatch Ltd.

    Inventor： Thomas Marzano ,  Keith W. Seitz ,  Robert A. Stevenson ,  Christine A. Frysz ,  Marc Gregory Martino

    IPC: H01R13/52 ,  H01R13/426 ,  H01G4/35 ,  H01R13/719 ,  A61N1/375

    Abstract: A hermetic feedthrough terminal pin connector for an active implantable medical device (AIMD) includes an electrical insulator hermetically sealed to an opening of an electrically conductive ferrule. A feedthrough terminal pin is hermetically sealed to and disposed through the insulator, the feedthrough terminal pin extending outwardly beyond the insulator on the inside of the casing of the AIMD. A circuit board is disposed on the inside of the casing of the AIMD. A terminal pin connector includes: an electrically conductive connector housing disposed on the circuit board, wherein the connector housing is electrically connected to at least one electrical circuit disposed on the circuit board; and at least one electrically conductive prong supported by the connector housing, the at least one prong contacting and compressed against the feedthrough terminal pin, the at least one prong making a removable electrical connection.

    RF Switch And An EMI Filter Capacitor For An AIMD Connected In Series Between A Feedthrough Active Conductor And System Ground
    6.
    发明申请
    RF Switch And An EMI Filter Capacitor For An AIMD Connected In Series Between A Feedthrough Active Conductor And System Ground 有权

    公开(公告)号：US20210038902A1

    公开(公告)日：2021-02-11

    申请号：US17077337

    申请日：2020-10-22

    Applicant: Greatbatch Ltd.

    Inventor： Robert A. Stevenson ,  Keith W. Seitz ,  Jason Woods ,  Christine A. Frysz

    IPC: A61N1/375 ,  A61N1/39

    Abstract: An enhanced RF switchable filtered feedthrough for real-time identification of the electrical and physical integrity of an implanted AIMD lead includes a DOUBLE POLE RF switch disposed on the device side. Additionally, the RF switchable filtered feedthrough can optionally include transient voltage suppressors (TVS) and an MRI mode. In an embodiment, a DOUBLE POLE RF switch selectively disconnects EMI filter capacitors so that an RF test/interrogation signal is sent from the AIMD down into an implanted lead(s). The reflected RF signal is then analyzed to assess implanted lead integrity including lead body anomalies, lead insulation defects, and/or lead conductor defects. The Double Pole switch is configured to be controlled by an AIMD control signal to switch between FIRST and SECOND THROW positions. In the FIRST THROW position a conductive leadwire hermetically sealed to and disposed through an insulator is electrically connected to a filter capacitor, which is then electrically connected to the ferrule of a hermetic feedthrough of an AIMD. In the FIRST THROW position, EMI energy imparted to a body fluid side implanted lead can be diverted to the housing of the AIMD. In the SECOND THROW position the conductive leadwire is electrically connected to an RF source disposed on the device side of the housing of the AIMD. While in the SECOND THROW position, a reflective return signal from the RF source is measured and analyzed to determine if the implanted AIMD lead exhibits any life-threatening performance issues, such as lead body anomalies, lead insulation defects or changes, or even defective, fractured or dislodged lead conductors. In another embodiment, a SINGLE POLE RF switch is configured to disconnect filter capacitors during the delivery of a high-voltage cardioversion shock from an implantable cardioverter defibrillator. Dis-connection of the filter capacitor either reduces or eliminates filter capacitor pulse inrush currents, which allows for the use of standard low-voltage filter capacitors instead of larger and more expensive high-voltage pulse rated filter capacitors. Dis-connection of the filter capacitor also allows for an RF interrogation pulse to be applied to the implanted lead in real-time (for example, pre-set intervals throughout the day).

    AIMD RF SWITCH TO CONNECT AN ICD DEFIBRILLATION ELECTRODE CONDUCTOR EITHER TO A FILTER CAPACITOR OR TO AN RF SOURCE CONFIGURED TO DETECT A DEFECTIVE IMPLANTED LEAD
    7.
    发明申请
    AIMD RF SWITCH TO CONNECT AN ICD DEFIBRILLATION ELECTRODE CONDUCTOR EITHER TO A FILTER CAPACITOR OR TO AN RF SOURCE CONFIGURED TO DETECT A DEFECTIVE IMPLANTED LEAD 审中-公开

    公开(公告)号：US20200246625A1

    公开(公告)日：2020-08-06

    申请号：US16854138

    申请日：2020-04-21

    Applicant: Greatbatch Ltd.

    Inventor： Robert A. Stevenson ,  Keith W. Seitz ,  Jason Woods ,  Christine A. Frysz

    IPC: A61N1/375 ,  A61N1/39

    Abstract: An enhanced RF switchable filtered feedthrough for real-time identification of the electrical and physical integrity of an implanted AIMD lead includes a DOUBLE POLE RF switch disposed on the device side. Additionally, the RF switchable filtered feedthrough can optionally include transient voltage suppressors (TVS) and an MRI mode. In an embodiment, a DOUBLE POLE RF switch selectively disconnects EMI filter capacitors so that an RF test/interrogation signal is sent from the AIMD down into an implanted lead(s). The reflected RF signal is then analyzed to assess implanted lead integrity including lead body anomalies, lead insulation defects, and/or lead conductor defects. The Double Pole switch is configured to be controlled by an AIMD control signal to switch between FIRST and SECOND THROW positions. In the FIRST THROW position a conductive leadwire hermetically sealed to and disposed through an insulator is electrically connected to a filter capacitor, which is then electrically connected to the ferrule of a hermetic feedthrough of an AIMD. In the FIRST THROW position, EMI energy imparted to a body fluid side implanted lead can be diverted to the housing of the AIMD. In the SECOND THROW position the conductive leadwire is electrically connected to an RF source disposed on the device side of the housing of the AIMD. While in the SECOND THROW position, a reflective return signal from the RF source is measured and analyzed to determine if the implanted AIMD lead exhibits any life-threatening performance issues, such as lead body anomalies, lead insulation defects or changes, or even defective, fractured or dislodged lead conductors. In another embodiment, a SINGLE POLE RF switch is configured to disconnect filter capacitors during the delivery of a high-voltage cardioversion shock from an implantable cardioverter defibrillator. Dis-connection of the filter capacitor either reduces or eliminates filter capacitor pulse inrush currents, which allows for the use of standard low-voltage filter capacitors instead of larger and more expensive high-voltage pulse rated filter capacitors. Dis-connection of the filter capacitor also allows for an RF interrogation pulse to be applied to the implanted lead in real-time (for example, pre-set intervals throughout the day).

    Low equivalent series resistance RF filter for an active implantable medical device
    8.
    发明授权
    Low equivalent series resistance RF filter for an active implantable medical device 有权

    公开(公告)号：US10596369B2

    公开(公告)日：2020-03-24

    申请号：US16121716

    申请日：2018-09-05

    Applicant: Greatbatch Ltd.

    Inventor： Robert A. Stevenson ,  Christine A. Frysz ,  Thomas Marzano ,  Keith W. Seitz ,  Marc Gregory Martino

    IPC: A61N1/08 ,  H01G4/005 ,  H01G4/30 ,  H01G4/35 ,  A61N1/375 ,  H01G4/236 ,  H01G4/12 ,  H03H1/00 ,  A61N1/37

    Abstract: A hermetically sealed filtered feedthrough assembly includes an electrically conductive ferrule sealed by a first gold braze to an insulator disposed at least partially within a ferrule opening. A conductive wire is disposed within a via hole disposed through the insulator extending from a body fluid side to a device side. A second gold braze hermetically seals the conductive leadwire to the via hole. A capacitor is disposed on the device side having a capacitor dielectric body with a dielectric constant k that is greater than 0 and less than 1000. The capacitor is the first filter capacitor electrically connected to the conductive leadwire coming from the body fluid side into the device side. An active electrical connection electrically connects the conductive leadwire to the capacitor active metallization. A ground electrical connection electrically connects the capacitor ground metallization to the ferrule and housing of the active implantable medical device.

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